Significant locations

Garden world Negao: A world terraformed during the Age of Technology, Negao is the Imperial world most like ancient Terra in the Esquiline Quadrant, both in terms of physical characteristics such as climate and gravity and in terms of flora and fauna. Negao is very much a temple of ancient Terra, whose surface is inhabited by wild horses, wolves, eagles and many other Terran creatures rarely seen elsewhere in the Ultima Segmentum.

Feral world Yrmidon: The only world in the Arcadius sector from which the Adeptus Astartes recruit regularly. 6% of the Revenants Chapter initiates have been recruited from this world, and 2% of the Maledictors Chapter.